制备基于聚合物的宽带光波导放大器的策略:在聚合物基质中掺入低晶场对称纳米晶体作为增益介质

IF 6.8 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Hao Cui  (, ), Zixuan Jiang  (, ), Yu Yang  (, ), Siliang Tao  (, ), Shuang Wu  (, ), Jing Yin  (, ), Fei Wang  (, ), Guanshi Qin  (, ), Fanchao Meng  (, ), Dan Zhao  (, ), Weiping Qin  (, )
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引用次数: 0

摘要

光波导放大器是集成光学系统中的重要设备,其增益带宽直接影响光路的工作波长。以往的掺 Er3+ 聚合物光波导放大器只能放大 C 波段内的信号。为了实现宽带聚合物光波导放大,我们建议使用具有低晶场对称性的纳米晶体来扩展工作带宽。我们的方法利用嵌入聚甲基丙烯酸甲酯中的 LiYF4: Yb, Er 纳米粒子作为增益介质,实现了从大部分 S 波段到整个(C + L)波段的信号放大。由于晶体场效应,LiYF4 宿主的低晶体场对称性显著分裂了 Er3+ 离子的 4I13/2 和 4I15/2 电平,从而促进了 980 纳米激发下的宽带下转换发光。此外,荧光动力学分析证实,Er3+ 的宽带发光源于晶体场效应引起的显著能级分裂。在 980 nm 激发下,放大器在 1535 nm 波长处的相对增益约为 12.6 dB,在 1480 nm 波长处的相对增益约为 7.4 dB,在 1610 nm 波长处的相对增益约为 3.7 dB。成功制备了掺 Er3+ 的宽带聚合物光波导放大器。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A strategy for preparing broadband polymer based optical waveguide amplifiers: doping low crystal field symmetric nanocrystals in polymer matrix as gain media

Optical waveguide amplifiers are essential devices in integrated optical systems, with their gain bandwidths directly influencing the operating wavelengths of optical circuits. Previous Er3+-doped polymer optical waveguide amplifiers have been limited to amplifying signals within the C-band. To achieve broadband polymer optical waveguide amplification, we propose the use of nanocrystals with low crystal field symmetry to extend the working bandwidth. Our approach utilizes LiYF4: Yb, Er nanoparticles embedded in poly(methyl methacrylate) as the gain medium, enabling signal amplification from most of the S-band to the whole (C + L) band. The low crystal field symmetry of the LiYF4 host significantly splits the 4I13/2 and 4I15/2 levels of Er3+ ions owing to the crystal field effect, facilitating broadband down-conversion luminescence under 980-nm excitation. Furthermore, a fluorescence kinetic analysis confirms that the broadband luminescence of Er3+ arises from significant energy-level splitting caused by the crystal field effect. Under 980-nm excitation, the amplifiers exhibited relative gains of approximately 12.6 dB at 1535 nm, 7.4 dB at 1480 nm, and 3.7 dB at 1610 nm. The Er3+-doped broadband polymer optical waveguide amplifier was successfully prepared.

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来源期刊
Science China Materials
Science China Materials Materials Science-General Materials Science
CiteScore
11.40
自引率
7.40%
发文量
949
期刊介绍: Science China Materials (SCM) is a globally peer-reviewed journal that covers all facets of materials science. It is supervised by the Chinese Academy of Sciences and co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China. The journal is jointly published monthly in both printed and electronic forms by Science China Press and Springer. The aim of SCM is to encourage communication of high-quality, innovative research results at the cutting-edge interface of materials science with chemistry, physics, biology, and engineering. It focuses on breakthroughs from around the world and aims to become a world-leading academic journal for materials science.
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